Air motor



Aug. 14, 1923. 1,464.575

H. MGGRAW AIR MOTOR Filed June 25 1921 2 Sheets-Sheet 2 Patented Aug. 14, 1923.

UNITED STATES PATENT OFFICE.

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Application lied Inc as, 1921. Serial Io. mm.

Toallwbomitmayoonoem:

Be it known that I, Ham MoGaAm-a citizen of the United States, residing at Marion, in the county of Grant andState of Indiana, have invented a new and useful Air Motor, of which the following is a specification.

This invention relates to air motors, and more particularly to a motor operated by a current of air passing through an air conduit which is in communication with a smoke stack or the like.

The primary object of the invention is to provide a wheel disposed in the path of travel of the current of air, whereby the air will act on the blades of the wheel to cause the rotation thereof.

A further object of the invention is to provide means for controlling the passage of air through the air duct, thereby regulatin the s of thewheel.

ith t e foregoing and other objects in view which will appear as the description proceeds, the invention resides in the commation and arrangement of parts. and in the details of construction hereinafter de scribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made w1thin the scope of what is claimed, without defizrtmg from the s irit of the invention.

ferrmg to the rawingsz- Figure 1 is a side elevational view of a motor constructed in accordance with the present invention.

Figure 2 is a sectional view through the motor chamber and air conduit.

Figure 3 is a sectional view taken on line 33 of Figure 1.

Figure 4 is a sectional view taken on line 4-4 of Figure 1.

Referrin to the drawings in detail, the reference c aracter 5 designates an air column which has communication with a smoke stack, whereby the products of combustion passing throu h the smoke stack, will create a vacuum wit in the column 5 to draw air through the conduit 6 which communicates therewith. I

At one end of the conduit 6 is an enlarged motor chamber 7 which is preferably circular in cross section to accommodate the motor or wheel 8, which is provided with blades 9 that lie within the path of travel of air passin into the motor chamber, so that the whee will be rotated. The wheel or motor embodies a hub 10 which is supportml on the axle 11 that extends transversely through the motor chamber.

The motor chamber is provided with an opening 12 at the upper portion thereof, and an opening 13 at the lower portion thereof, there being provided a guideway 14 to accommodate the sliding closure 15 adapted to move over the openings to close the same, and it will be seen that when the closure is moved to a position indicated by Figure 2 of the drawings, air is admitted to the motor chamber through the opening 12, causin the wheel or motor to rotate in a clockwise direction, but when the closure is moved to close the opening 12, air is admitted through the opening 13, to the end that the wheel or motor is operated in the op osite direction.

ooperating with the closure 15 is a curved damper 16 supported by the guides 17, that are positioned within the air conduit 6, the damper being provided with an extension 18 which is threaded to accommodate the nut 19, to permit the damper to be secured in various positions of ad ustment. The damper 16 controls the passage of air through the conduit 6, and when the damper 16 is moved to a position as indicated by Figure 2 of the drawings, air passes into the conduit 6 at a int adjacent to the upper end thereof, tliia damper acting to restrict the diameter of the conduit 6 at one point to increase the force of the current of air passing through the conduit 6.

If it is desired to cut off the passage of air through the conduit 6, the damper 20 1s operated to cause the edges thereof to closely engage the inner wall of the conduit 6. By moving this damper 20, it will be seen that the diameter of the conduit may be restricted to vary the speed of the wheel or motor.

on one end of the shaft 11 is a power pulley 21 which may transmit motion through the medium of a belt or the like, to any suitable machinery.

Having thus described the what is claimed as new is In a device of the character described, a vertical air column, a horizontall disposed conduit in communication with the air column and having an enlarged end forming a motor chamber, a motor operating in the motor chamber, pairs of guides supported within the conduit at a point adjacent to invention,

the motor chamber, 1 duupefpositionei trolling th e p esage of eir through the con- 10 between the idea the damper of a width less m the width of the m5 provide a pmgewey between one of r the damper and the adjgeent well 0 the conduit, a closure for controlling themovement of the motor by a eii-Itthe upper, or lower extremities 0 the motor chamber end a pivoted damper for conduit. nit to In testimon aim Iclnim the foregoing I heve hereto eflixed my sigas .my 0 nature in tile presence of two witn HARRY MQGRAW. 

